NextDNS CLI installation failure on Raspian

I am trying to install fresh on a raspian (RPI 4B) and it is not proceeding the following. I am not sure what I am missing. Anyone??

root@raspi:~# DEBUG=1 sh -c "$(curl -sL https://nextdns.io/install)"
INFO: OS: raspbian
INFO: GOARCH: armv7
INFO: GOOS: linux
INFO: NEXTDNS_BIN: /usr/bin/nextdns
INFO: INSTALL_RELEASE: 1.37.4
DEBUG: Start install loop with CURRENT_RELEASE=
DEBUG: NextDNS is not installed
i) Install NextDNS
e) Exit
Choice (default=i): i
INFO: Installing NextDNS...
DEBUG: Using deb install type
Hit:1 http://archive.raspberrypi.org/debian bullseye InRelease
Hit:2 http://raspbian.raspberrypi.org/raspbian bullseye InRelease
Hit:3 https://repo.nextdns.io/deb stable InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package nextdns
DEBUG: Start install loop with CURRENT_RELEASE=
DEBUG: NextDNS is not installed
i) Install NextDNS
e) Exit
Choice (default=i): e
root@raspi:~#